In this task, you're given a question, a context passage, and four options which are terms from the passage. After reading a passage, you will get a brief understanding of the terms. Your job is to determine by searching and reading further information of which term you can answer the question. Indicate your choice as 'a', 'b', 'c', or 'd'. If you think more than one option is plausible, choose the more probable option to help you answer the question.
Q: Question: Who did Robert Riddell rebell against in Woodstock? Passage:Henry Scott Riddell was born on 23 September 1798 in Sorbie, near Langholm, Dumfriesshire, the third child of seven to Robert Riddell, a shepherd, and his wife Agnes (née Scott). His father was reportedly an associate of the Scottish poets James Hogg, the Ettrick Shepherd, who would occasionally visit their household and recite his own poetry to the children, and Walter Scott, as well as Sir Pulteney Malcolm. His elder brother, Borthwick Riddell, known as The Piper, was a locally renowned player of the bagpipes who notably played at the wedding of John Russell, 1st Earl Russell to Lady Frances Anna-Maria Elliot-Murray-Kynynmound, daughter of Gilbert Elliot, 2nd Earl of Minto, on 20 July 1841. His younger brother, Robert Riddell, emigrated to Canada and was an early pioneer of Beverley Township in Ontario. He also participated in the Upper Canada Rebellion, coming to be known as The Chief, leading dozens of men from County Wentworth in a march to Woodstock, Ontario.
 Links: a. Sorbie b. Ontario c. Dumfriesshire d. Woodstock, Ontario
A: 
d